ngx-input-color
Version:
Angular color input component and color picker (with HSL, HSV, RGB, CMYK, HEX, alpha, eye-dropper, etc)
157 lines • 22.3 kB
JavaScript
import { cmykToRgb, hexToRgb, hslToRgba, hsvToRgb, parseCmykString, parseHslString, parseHsvString, parseRgbString, rgbaToHex, rgbToCmyk, rgbToCmykString, rgbToHsl, rgbToHslaString, rgbToHsv, rgbToHsvString, } from './conversion';
import { colorNames } from './css-color-names';
export class NgxColor {
constructor(input) {
this._rgb = { r: 0, g: 0, b: 0, a: 1 };
this._name = '';
if (!input)
return;
if (input instanceof NgxColor) {
this._rgb = { ...input._rgb };
this._name = input._name;
return;
}
if (typeof input === 'object') {
if ('r' in input && 'g' in input && 'b' in input) {
this._rgb = { r: +input.r, g: +input.g, b: +input.b, a: input.a !== undefined ? +input.a : 1 };
return;
}
if ('h' in input && 's' in input && 'l' in input) {
this._rgb = NgxColor.hslaToRgba(input);
return;
}
if ('h' in input && 's' in input && 'v' in input) {
this._rgb = NgxColor.hsvaToRgba(input);
return;
}
if ('c' in input && 'm' in input && 'y' in input && 'k' in input) {
this._rgb = NgxColor.cmykToRgba(input);
return;
}
}
if (typeof input === 'string') {
const name = input.trim().toLowerCase();
if (colorNames[name]) {
this._rgb = hexToRgb(colorNames[name]);
this._name = name;
return;
}
else if (/^#?[0-9a-f]{3,8}$/i.test(name)) {
this._rgb = hexToRgb(name);
return;
}
if (name.includes('rgb')) {
this._rgb = parseRgbString(name);
return;
}
if (name.includes('hsl')) {
this._rgb = NgxColor.hslaToRgba(parseHslString(name));
return;
}
if (name.includes('hsv')) {
this._rgb = NgxColor.hsvaToRgba(parseHsvString(name));
return;
}
if (name.includes('cmyk')) {
this._rgb = NgxColor.cmykToRgba(parseCmykString(name));
return;
}
throw new Error('Unknown color string: ' + input);
}
}
get isValid() {
return (typeof this._rgb.r === 'number' &&
typeof this._rgb.g === 'number' &&
typeof this._rgb.b === 'number' &&
!isNaN(this._rgb.r) &&
!isNaN(this._rgb.g) &&
!isNaN(this._rgb.b));
}
async name() {
if (this._name)
return this._name;
const hex = this.toHexString();
for (const [n, h] of Object.entries(colorNames)) {
if (h.toLowerCase() === hex.toLowerCase())
return n;
}
return '';
}
toRgb() {
return this._rgb;
}
toRgbString() {
const { r, g, b, a } = this.toRgb();
return a === 1
? `rgb(${Math.round(r)},${Math.round(g)},${Math.round(b)})`
: `rgba(${Math.round(r)},${Math.round(g)},${Math.round(b)},${+a.toFixed(3)})`;
}
toHexString(allowAlpha = true) {
const { r, g, b, a } = this.toRgb();
return rgbaToHex(r, g, b, a, allowAlpha && a < 1);
}
toHsl() {
return NgxColor.rgbToHsla(this.toRgb());
}
toHsv() {
return NgxColor.rgbToHsva(this.toRgb());
}
toCmyk() {
return NgxColor.rgbToCmyk(this.toRgb());
}
static cmykToRgba(cmyk) {
const { c, m, y, k } = cmyk;
return { ...cmykToRgb(c, m, y, k), a: cmyk.a !== undefined ? +cmyk.a : 1 };
}
static rgbToCmyk(rgba) {
const { r, g, b } = rgba;
return rgbToCmyk(r, g, b);
}
static rgbToHsla(rgba) {
const { r, g, b, a } = rgba;
return { ...rgbToHsl(r, g, b), a };
}
static rgbToHsva(rgba) {
const { r, g, b, a } = rgba;
return { ...rgbToHsv(r, g, b), a };
}
static hsvaToRgba(hsva) {
const { h, s, v, a } = hsva;
return { ...hsvToRgb(h, s, v), a: a !== undefined ? a : 1 };
}
static hslaToRgba(hsla) {
const { h, s, l, a } = hsla;
return { ...hslToRgba(h, s, l), a: a !== undefined ? a : 1 };
}
equals(other) {
if (!other)
return false;
return this.toHexString().toLowerCase() === other.toHexString().toLowerCase();
}
isDark() {
const { r, g, b, a } = this.toRgb();
return a < 0.5 ? false : 0.299 * r + 0.587 * g + 0.114 * b < 128;
}
isLight() {
return !this.isDark();
}
async getOutputResult(outputType) {
const { r, g, b, a } = this._rgb;
switch (outputType) {
case 'CMYK':
return rgbToCmykString(r, g, b);
case 'HSL':
return rgbToHslaString(r, g, b, a);
case 'HSV':
return rgbToHsvString(r, g, b, a);
case 'RGB':
return a < 1 ? `rgba(${r}, ${g}, ${b}, ${+a.toFixed(2)})` : `rgb(${r}, ${g}, ${b})`;
case 'HEX':
return this.toHexString(true);
default:
let name = await this.name();
return name ?? this.toHexString(true);
}
}
}
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{\r\n  cmykToRgb,\r\n  hexToRgb,\r\n  hslToRgba,\r\n  hsvToRgb,\r\n  parseCmykString,\r\n  parseHslString,\r\n  parseHsvString,\r\n  parseRgbString,\r\n  rgbaToHex,\r\n  rgbToCmyk,\r\n  rgbToCmykString,\r\n  rgbToHsl,\r\n  rgbToHslaString,\r\n  rgbToHsv,\r\n  rgbToHsvString,\r\n} from './conversion';\r\nimport { colorNames } from './css-color-names';\r\nimport { CMYK, HSL, HSLA, HSV, HSVA, RGB, RGBA } from './interfaces';\r\nexport type ColorInput = string | CMYK | HSLA | HSVA | RGBA | NgxColor;\r\nexport type OutputType = 'CMYK' | 'HSL' | 'HSV' | 'RGB' | 'HEX';\r\n\r\nexport class NgxColor {\r\n  private _rgb: RGBA = { r: 0, g: 0, b: 0, a: 1 };\r\n  private _name: string = '';\r\n\r\n  constructor(input?: ColorInput) {\r\n    if (!input) return;\r\n    if (input instanceof NgxColor) {\r\n      this._rgb = { ...input._rgb };\r\n      this._name = input._name;\r\n      return;\r\n    }\r\n    if (typeof input === 'object') {\r\n      if ('r' in input && 'g' in input && 'b' in input) {\r\n        this._rgb = { r: +input.r, g: +input.g, b: +input.b, a: (input as any).a !== undefined ? +input.a : 1 };\r\n        return;\r\n      }\r\n      if ('h' in input && 's' in input && 'l' in input) {\r\n        this._rgb = NgxColor.hslaToRgba(input as HSLA);\r\n        return;\r\n      }\r\n      if ('h' in input && 's' in input && 'v' in input) {\r\n        this._rgb = NgxColor.hsvaToRgba(input as HSVA);\r\n        return;\r\n      }\r\n      if ('c' in input && 'm' in input && 'y' in input && 'k' in input) {\r\n        this._rgb = NgxColor.cmykToRgba(input as CMYK);\r\n        return;\r\n      }\r\n    }\r\n    if (typeof input === 'string') {\r\n      const name = input.trim().toLowerCase();\r\n      if (colorNames[name]) {\r\n        this._rgb = hexToRgb(colorNames[name]);\r\n        this._name = name;\r\n        return;\r\n      } else if (/^#?[0-9a-f]{3,8}$/i.test(name)) {\r\n        this._rgb = hexToRgb(name);\r\n        return;\r\n      }\r\n      if (name.includes('rgb')) {\r\n        this._rgb = parseRgbString(name);\r\n        return;\r\n      }\r\n      if (name.includes('hsl')) {\r\n        this._rgb = NgxColor.hslaToRgba(parseHslString(name));\r\n        return;\r\n      }\r\n      if (name.includes('hsv')) {\r\n        this._rgb = NgxColor.hsvaToRgba(parseHsvString(name));\r\n        return;\r\n      }\r\n      if (name.includes('cmyk')) {\r\n        this._rgb = NgxColor.cmykToRgba(parseCmykString(name));\r\n        return;\r\n      }\r\n      throw new Error('Unknown color string: ' + input);\r\n    }\r\n  }\r\n\r\n  get isValid(): boolean {\r\n    return (\r\n      typeof this._rgb.r === 'number' &&\r\n      typeof this._rgb.g === 'number' &&\r\n      typeof this._rgb.b === 'number' &&\r\n      !isNaN(this._rgb.r) &&\r\n      !isNaN(this._rgb.g) &&\r\n      !isNaN(this._rgb.b)\r\n    );\r\n  }\r\n\r\n  async name() {\r\n    if (this._name) return this._name;\r\n    const hex = this.toHexString();\r\n    for (const [n, h] of Object.entries(colorNames)) {\r\n      if (h.toLowerCase() === hex.toLowerCase()) return n;\r\n    }\r\n    return '';\r\n  }\r\n\r\n  toRgb(): RGBA {\r\n    return this._rgb;\r\n  }\r\n\r\n  toRgbString(): string {\r\n    const { r, g, b, a } = this.toRgb();\r\n    return a === 1\r\n      ? `rgb(${Math.round(r)},${Math.round(g)},${Math.round(b)})`\r\n      : `rgba(${Math.round(r)},${Math.round(g)},${Math.round(b)},${+a.toFixed(3)})`;\r\n  }\r\n\r\n  toHexString(allowAlpha = true): string {\r\n    const { r, g, b, a } = this.toRgb();\r\n    return rgbaToHex(r, g, b, a, allowAlpha && a < 1);\r\n  }\r\n\r\n  toHsl(): HSLA {\r\n    return NgxColor.rgbToHsla(this.toRgb());\r\n  }\r\n\r\n  toHsv(): HSVA {\r\n    return NgxColor.rgbToHsva(this.toRgb());\r\n  }\r\n\r\n  toCmyk(): CMYK {\r\n    return NgxColor.rgbToCmyk(this.toRgb());\r\n  }\r\n\r\n  static cmykToRgba(cmyk: CMYK): RGBA {\r\n    const { c, m, y, k } = cmyk;\r\n    return { ...cmykToRgb(c, m, y, k), a: (cmyk as any).a !== undefined ? +(cmyk as any).a : 1 };\r\n  }\r\n\r\n  static rgbToCmyk(rgba: RGBA): CMYK {\r\n    const { r, g, b } = rgba;\r\n    return rgbToCmyk(r, g, b);\r\n  }\r\n\r\n  static rgbToHsla(rgba: RGBA): HSLA {\r\n    const { r, g, b, a } = rgba;\r\n    return { ...rgbToHsl(r, g, b), a };\r\n  }\r\n\r\n  static rgbToHsva(rgba: RGBA): HSVA {\r\n    const { r, g, b, a } = rgba;\r\n    return { ...rgbToHsv(r, g, b), a };\r\n  }\r\n\r\n  static hsvaToRgba(hsva: HSVA): RGBA {\r\n    const { h, s, v, a } = hsva;\r\n    return { ...hsvToRgb(h, s, v), a: a !== undefined ? a : 1 };\r\n  }\r\n\r\n  static hslaToRgba(hsla: HSLA): RGBA {\r\n    const { h, s, l, a } = hsla;\r\n    return { ...hslToRgba(h, s, l), a: a !== undefined ? a : 1 };\r\n  }\r\n\r\n  equals(other?: NgxColor): boolean {\r\n    if (!other) return false;\r\n    return this.toHexString().toLowerCase() === other.toHexString().toLowerCase();\r\n  }\r\n\r\n  isDark(): boolean {\r\n    const { r, g, b, a } = this.toRgb();\r\n    return a < 0.5 ? false : 0.299 * r + 0.587 * g + 0.114 * b < 128;\r\n  }\r\n\r\n  isLight(): boolean {\r\n    return !this.isDark();\r\n  }\r\n\r\n  async getOutputResult(outputType: OutputType): Promise<string> {\r\n    const { r, g, b, a } = this._rgb;\r\n\r\n    switch (outputType) {\r\n      case 'CMYK':\r\n        return rgbToCmykString(r, g, b);\r\n\r\n      case 'HSL':\r\n        return rgbToHslaString(r, g, b, a);\r\n\r\n      case 'HSV':\r\n        return rgbToHsvString(r, g, b, a);\r\n\r\n      case 'RGB':\r\n        return a < 1 ? `rgba(${r}, ${g}, ${b}, ${+a.toFixed(2)})` : `rgb(${r}, ${g}, ${b})`;\r\n\r\n      case 'HEX':\r\n        return this.toHexString(true);\r\n\r\n      default:\r\n        let name = await this.name();\r\n        return name ?? this.toHexString(true);\r\n    }\r\n  }\r\n}\r\n"]}